well went to dyno the ol tahoe today before the P/P head swap. It made 278.84 hp and 314.28 tq. Kinda disappointed with that, but i think my injectors are maxed out. At about 4200 it leans out and from there to about 5500 it loses power. Just wanted to see what everyone else thought.

Also what injectors did mine come with? my buddies 05 truck made way more hp and and had stock injectors in his truck with a huge *** cam. Just wondering if his are rated more due to year.

 

Fresh fuel filter? Fuel pump.....

 

It would be easier to help you with just a little bit of information about your vehicle. Little things like year/make/model/mods.

Did you log IDC during the run? Do you moniter the fuel pressure at the same time? Without more information, everybody is just gonna guess, sending you on a wild goose chase.

 

Thats my mods as of now... ive got a new pump and filter not 6 months ago. New plugs wires and all that good stuff. I looked at the IDC on the way home and it showed 154%? doesnt seem right to me.

2000 Z71 Tahoe - LPP LT's, O/R Y, 14" magnaflow, TB spacer, MAC CAI, 05 fans, Comp 218/222 .564/.566 112 lsa, Z06 springs, TB stall, and BB tune!

 

Is there anyway for you to post the tune???

 

and scan???

 

The tune is off, there is no way you're at 154% with those mods. I had a bigger cam than you in my truck with the same stock injectors and hit mid 90s with a good tune. There is something else wrong, a bad fuel pump can cause an inflated IDC number.

 

Agreed

 

well thats what im thinking the fuel pump. Im going to put a gauge on it today and see whats up. Also im going to put my other tune before the dyno back in and see what my IDC is then... Like i said something just doesnt seem right. I was hoping to have 300+ with my mods??

 

I'd say around 320 to the wheels depending on the tune, weather, and dyno.